public GetCampaignVersionsResponse GetCampaignVersions(GetCampaignVersionsRequest request)
{
var marshaller = new GetCampaignVersionsRequestMarshaller();
var unmarshaller = GetCampaignVersionsResponseUnmarshaller.Instance;
return Invoke<GetCampaignVersionsRequest,GetCampaignVersionsResponse>(request, marshaller, unmarshaller);
}